| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Günter, Clara Heimburger, Niklas Franklin, David W. Leib, Raz |
| Abstract | Background Grasping and manipulating objects requires humans to adapt both grip and manipulation forces. When handling an object with both hands, the additional degrees of freedom introduce more levels to the redundancy of the object manipulation since we can distribute the contribution of the grip and manipulation forces between hands. Methods In this study, we investigated the forces produced by both hands during coupled bimanual manipulation of a needle object in a virtual environment. The task objective was to puncture a virtual tissue, modeled as a linear spring, and stop immediately after, with the hands arranged in front and back positions in the movement direction. Results We show that during tissue interaction, grip forces are modulated consistently between front and back hands across participants, but manipulation forces are not. That is, the back hand consistently produced excessive grip force compared to the front hand regardless of hand configuration, while manipulation force distribution between the two hands was variable. After the tissue puncture, we again observed consistent grip force behavior during the reactive response to the force drop following the puncture. The grip force signal exhibited a consistent temporal profile in both the front and back hands with amplitude modulation according to the tissue stiffness in the front hand. Conclusions Overall, our results support the idea of distinct control mechanisms for grip and manipulation forces which rely on hand position rather than hand dominance. |
| Related Links | https://jneuroengrehab.biomedcentral.com/counter/pdf/10.1186/s12984-025-01600-4.pdf |
| Ending Page | 16 |
| Page Count | 16 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 17430003 |
| DOI | 10.1186/s12984-025-01600-4 |
| Journal | Journal of NeuroEngineering and Rehabilitation |
| Issue Number | 1 |
| Volume Number | 22 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2025-03-11 |
| Access Restriction | Open |
| Subject Keyword | Neurosciences Neurology Rehabilitation Medicine Biomedical Engineering and Bioengineering Bimanual manipulation Grip force Force control Object manipulation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health Informatics Rehabilitation |
| Journal Impact Factor | 5.2/2023 |
| 5-Year Journal Impact Factor | 5.6/2023 |
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